pentz



(NoMoael.) 5 sheets-sheet 1,

A. D. PENTZ.

BORING ENGINE. No. 461,202. Patented Oct. 13, 1.891.

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5 Sheets-Sheet 2,

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(No Model.) 5 sheets-sheet 3.

A. D. PENTZ.

BORING ENGINE.

' No. 461.202. Patented Oct. 13,1891.

(No Model.) Y 5 Sheets-'Sheet 4.

A. D. PENTZ.

y BORING ENGINE. y No. 461,202. Y Patented Oct. 13,1891.

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5 Sheets-Sheet 5. A. D. PENTZ. BORING ENGINE.

(No Model.)

Patented Oct. 13, 1891.

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UNITED STATES PATENT OFFICE.

' ALBER'r D. PENTz, or ELIZABETH, NEw JERSEY, AssIoNoR To rnMsELF, VAND ABRAHAM vANDERBEEK, oF NEW YORK, N. Y.

BORING-ENGINE.

SPECIFICATION forming part of Letters Patent No. 461,202, dated. Octobel` 13, 1891'.

Application tiled February 26, 1891.

To all whom it may con/cern.-

Beit known that I, ALBERT D. PENTZ, a citizen of the United States, residing at Elizabeth, in the county of Union and State of New Jersey, have invented an Improvement in BoringEngines, of which the following is a specification.

The present invention is an improvement upon that set forth in Letters Patent No'. 408,259, granted to ine August 6, 1889; and the said invention relates to the devices and their combinations, hereinafter set forth, whereby the capacity of the said machine is very much increased and the facility for handling the article thatvis being operated upon is also increased, and the boringbar and parts that carry the tool and the article operated upon are stiffened and vibration of the parts is lessened.

I have reduced this invention to practic by constructing the machine illustrated in the accompanying drawings, wherein- Figure 1 is a vertical section of theapparatus with the spindle in elevation. Fig. 2 is a horizontal plan at the line a: w, Fig. 1. Fig.3 is a general perspective in smaller size, showing the positions of the parts. Fig. 4. is a detached view of the pendent drop. Fig. 5 is a sectional plan at the line y y and in larger size. Fig. 6 is a plan view, partially' in section, of the knee-plate and saddle. Fig. 7 is a sectional plan i at one end of the platen. Fig. 8 is au end view thereof ,and of the revolving angle-plate. Fig. 9 is. an elevation. Fig. 10 is a plan of said revolving angle-plate and the parts connected therewith. Fig. 1 1 is a section at the line y y of Fig. 9. Fig 12 is a section in larger size at the line z of Fig. 1, and Fig 13 is a section in larger size of a portion of the platen and swivel-plate.

The main column A, Fig. l, is preferably rectangular and provided with a flaring base or foot, and the top of 1he columnis extended upwardly to form the standards or frames A', that are connected at theirupper ends by the tube B', through which passes thesupportingarm B, and this tube B' is slotted at one side and provided with screws a, by which the supporting-arm can be 'clamped rni'ly after it has been adjusted to the proper position, and this supporting-arm B, being circular and Serial No. 3821950. (No model.)

the clamping-tube B to any desired extent to adapt the machine to the article that is being bored or turned, and such supporting-arm can also be turned iu the tube B to bring the center of the bushing b in the pendent arm C inj rigidly by aA screw 2 in said slot, that is tapped into the front edge of the knee-plate E, Figs. 1, 3, and 6` hereinafterdescribed. This pendent arm being slotted, the knee-plate and the parts carried by it can be raised or lowered during the operations of the machine after the clamping-screw 2, Figs. 3, and 4, has been loosened. This slotted pendent arm is especially advantageous when a milling-tool rotated by the spindle D is made to act atdiiferent heights upon the surface of an article that -is supported by the knee-plate and the slide-rests thereof.

The front end of the supporting-arm B terminates in a hollow vertical cylinder c, split open or separated at one side and provided with clamping-screws 3, into which cylinder the upper end of the pendent arm C is received and securely held by the screws, so that the bushing may be brought into line with the axis of the spindle D. It is preferable to provide-a flange at the upper end of the arm C to form a stop against the cylinder c when the bushing b is at the proper distance from the axis of the arm B.

One peculiarity of the present invention relates to the construction of the spindle and the parts for driving the same. The spindle D is tubular, having a flange 4 at the outer end and an external screw upon which the chuck can be secured, as in a lathe, and this spindle D passes through the frames A A', and there is a split nut 5 around a screwthread at the back surface of the front frame A', to prevent the spindle drawing forward, and this nut 5 is clamped firmly after being adjust-ed by a transverse screw across the split, as seen in Fig. 2, and there is a Washer between the nut 5 and the back face of the ICO ' tubular hub Ffor connecting the gear-wheel.

standard A'. rI'lhe bushings 6 and 7 within the standard A'v and around the spindle D are conical, with a Washer at S, upon which the thrust is received in the milling or turning operation.

The driving-pulleys F have two or more steps in the cone of pulleys for the reception of the driving-belt from any suitable countershaft. The driving-pulleys are formed of a shell, preferably of cast-iron, received. upon the tubular hub F', having a flange at one end, the rim of which passes within the largest edge `of the pulley. By this construction I am enabled to cut a pinion 9 at one end of the tubular hub F' when the hubis separate from the pulley, and such pinion projects, beyond the end of the pulley when the pulley is shrunk upon the tubular hub, and' its iiange may be secured by pins, so thatthe tubular hubl and pulleys are firmly connected together; but they are loose on the spindle D, so as to revolve freely around the. same.

A Upon thespindle D is a gear-wheel G,which is firmly connected to thespindle D by ay key 10 and this key passes through a4 mortise in the spindle D., so as to firmly connect the gear-wheel and the spindle, and the inner end. of this key lO passes into a longitudinal slot or key-seat in the tool-holding tube D', Fig. 2,I hereinafter described, and there is a movable. lock ll upon the gear-wheel G to lock into` a notch within the flange on the G andthe driving-pulleys, so that thel power may bel applied directly from the driving-- pulleys F to the spindle D,.or when this lock ll isdisconnected from the hub F thev pulleys F'arefreeto.v revolvearound the spindle. 1).,.and theI motion is taken from thepinion 9 to. the counter-shaft H by the gear-wheel I and 1 communicated from the counter-shaft H by the pinion. l."'whichis brought into gear with the wheel G.. Iliind it advantageous to, place upon the, counter-shaft akey 12with a central collar, so thatthe, gear I can be slipped upon the key 12 torcia-te the shaft H from. the pinion 9. whenever thecounter-shaft is to be rotated, andi the-pinion I' is to be slipped upon the key'l2,and receive its motion therefrom whenever t-helock l1 is disconnectedfromthe hub F,so.tha t the spindle'is rotated with a slower movement through the gearing and countershaft. By this construction I am enabled to give, a motion tothe counter-shaft vfor drivingotherpartsof the machin,eas hereinafter described, andl this motion can be continuous and uniform regardless of whether, the spin,-

dleis receiving a fast or aslow motion. Hence I amenabled to take a feeding motion from thecounter-shaft regardless of the speed of the spindle, andI` provide upon the counter-V cone-pulleys N', and this feed-shaft N is provided with a movable extension-shaft O,with

universal joints O O2 at the respective ends, and these universal jointsmay be of any desired character; butI have represented them as similar to the joints in my patent, No.`

433,304, granted July 29, 1890.

From the rear standard or frame A' a tubu- With the spindle D.` This sleeve A2 is bored to receive the end of the spindle and turned off and faced to fit the opening in. the stan-dpartsare put together, and the shell of the.

ard A', so as to.. be perfectly in line with the spindle, and within this sleeve A2 is a tubular g nut K, and within such tubular n ut is a tubular screw K', having a collar,.as seenI in Fig` 2, and a gear-wheel e, permanently connected to such tubular screw K' by a key and nut, so that when this gear-wheel@ is rotatedthe tubular screw K will be revolved. l K is allowed to slide endwise upon a key or feather attached within the sleeve A2 when The tubular nut acted upon by the screw K'; but such tubular nut K does not revolve, and it` is connected 5 at its innerend with the toolfholding tube D' by a neck or collarupon thefend of the'tubu.-

' lar sleeve A2-extends horizontally and in line lar nut K, received into a corresponding re.-

i cess in the tool-holding tube D', so that the :latter is free, to revolve with the spindle D, and this tool-holding tube is slotted, as aforesaid, for the inner end of the key l0,so`that this tool-holding tube may be projectedV or `retracted by the screw K' and the tubular `nut K during the, operations of boring or milling as performed in this machine.

It is to be understood that the feed-screw tool, and this boring-bar is of any suitable IOO IIO

length; but it is preferably made to iit the tool-holding tube D', or any suitable tool is clamped by a chuck held within the taperhole in the front end of t-he tube D', the spin- `dle and tool-holding tube always revolving together. The boring bar or tool passes through and is supported by the bushing in the pendent drop or arm C. In cases where a'milling-tool is made use of it is attached to the screw on the end' of the spindle D and the feed-screw is thrown out ot' action. to be understood that boring and drilling tools that require a. feed in the direction of the axis of the spindleare held within the tube D', and that milling-cutters that are fed by `a movement of the article operated upon P at the front end of such feed-shaft P, and

there is a gear-wheel e on the feed-shaft P, gearing into the wheel e upon the tubular feed-screw K, so that such feed-screw can be rotated by the hand-wheel P.

Y In operating upon meta-l by either boring, milling, or cutting tools the tool is often broken or worn by being fed either too rapidly or by the tool encountering some unexpected obstacle. To prevent injury to the tool, the gear e is connected to the feed-shaft P frietionally, so that the shaft P may continue to revolve without moving the feedscrew in cases where the tool meets with undue resistance. I make the frictional device that is applied to the gear e of acollar 13 permanently fastened to the feed-shaft P and a conical washer 1-1 and screw 15. The washer 14 is rotated with the shaft P by a feather or interlocking lugs, and the screw 15 applies more or less friction to the gear e between the edges of the conical washer and the edges of the collar P at the opposite faces of the gear e; and I provide an oiling-hole through the conical washer 14 and a hole passing through the gear e', whereby both frictional surfaces can be properly lubricated by oil that is retained within the cavity of the conical washer.

In order to rotate the feed-screw P with uniformity, I make use of a worm g upon the spindle D, and this drives a worm-pinion h upon the inclined shaft t', at the upper and outer end of which is a bevel-gear k, gearing with the bevel-gears Z and m upon the feedshaft P, which gears Z and m are loose', and each gear is provided with a clutch upon its l inner face,between which is the sliding clutch n upon a feather upon the feed-shaft P, and there is a lever o, by which the clutch n can be shifted to couple the bevel-gear l or the bevel-gear m with the feed-shaft, in order that said feed-shaft P may be rotated in either one direction or the other; and itis advantageous to make the feed-screw K with the thread in sucha direction that the drilling-feed will be effected through the bevelgear K and larger bevel-gear 1n, and in this case the bevel-gear l will be used for running back the cutting-tool, and this motion will be more rapid than the feeding motion.

The knee-plate E is made with and supported by the knees or brackets E', the vertical edges of which are received between and behind the guides 16 on the column A, which guides are sufficiently strong for supporting the knee-plate and the partscarried by the same, and between these guides 1G the brackets and knee-plates can be raised or lowered by the screw Q and tubular nut Q. This screw Q is stationary and its lower end is received into a boss projecting from the base of the column A, and the tubular nut Q is capable of being rotated, and its upper end is received into a web or cross-bar between the two brackets E. one direction the knee-plate E can be lowered until its under side rests upon the top of the By rotating this nut Q in screw Q, and by rotating the tubular nut Q in the other direction the knee-plate can be raised until the tubular nut comes nearly to the top of the stationary `screw Q. By this means great latitude of motion is provided in a small compass.

In order to rotate the tubular nut Q', a pinion q and shaft passingthrough a sleeve or socket between the knees or brackets may be made use of, such shaft having a square upon its outer end for the reception of a handle or key; but when the knee-plate and the parts carried by it are to be moved vertically and progressively in milling or cutting the tubular nut Q is rotated by power from the eX- tension-shaftf O and its universal joints, the universal joint O2 being connected to a shaft 17, Fig. 5, that passes through bearings that project from one of the brackets E', and this shaft is provided with bevel-pinions 18, gearing with a bevel-wheel 19 upony a shaft 20, that has at its inner end a bevel-gear 70, engaging the bevel-wheel 7l upon the tubular nut Q', and the bevel-Wheels 18 are loose upon the shaft 17, and there is a feather and clutch between them, which clutch is moved by a hand-lever 21 to bring either wheel 18 into action and either raise or lower the kn ee-plate and brackets or lelse arrest its movement. By this means I am enabled to move the kneeplate and parts carried by it automatically or by hand or to stop the feed instantly.

- Upon the knee-plate E, Fig. 6, a saddle R is fitted to slide toward and from the column A, and this saddle is similar to the slide-rest of a tu ming-lathe, the edges of the knee-plate being inclined upwardly and thesaddle having beveled ledges or clips beneath the edges of the knee-plate, and there is upon the sad- ICO die R a nut, through which passes the adjusting-screw R', having at its outer end a hany ldie R2, and this adjusting-screw R is not central, as usual; but it is at one side of the center, so as not to be in the way of the screw Q, and also to be at one side and out ofthe way of the slotted lower end C of the arm or pendent drop C.'

The swivel yplate 'S rests upon the saddle R, and there is a center pin connecting the swivel and the saddle, and in the top surface of the saddle there is an annular groove undercut or T shaped for the reception of the heads of the clamping-screwsr. This allows the swivel-plate to be turned around into any desired position in relation to the saddle and clamped by the screw r. Upon this swivelplate is a platen T, the lower edges of which are made as dov'etail ribs sliding in a correspondingly dovetailed recess across the swivel-plate, and there is a longitudinal adis grooved longitudinally with Vundercut or T grooves for the reception of the heads of clamping-bolts, and there is also preferably near the center thereof an annular groove for the reception of bolts to secure a clamping.- bed or other supporting device for thearticle to beV operated. upon.

If there is any looseness of the platen, the parts are liable to tremble and the operations of the tool are made imperfect. To prevent this, I employ a double-inclined gib 23, (see Figs. 1 and 13,) one face of which rests upon the inclined surface of the slide of the platen, and the other surface of which gib rests against the under side of the overhanging or dovetail portion of the swivel-plate, so that toftighten. up theparts, an d this lateral motionv is givenL by screws 24 passing infthrough theside: of the swivel-plate and into notches` in the outer edge. of the inclined gib, and` thesev screwsfpreventthe gib moving endwise, and by means of these screws the gib can be set up toicompensate wear and., if necessary, to'form.- aclamp thatholds the pla-ten firmly within the swivel-plate;v but usually itis only necessary toset up thesescrews 2.4 sufficiently tocompensate Wear and prevent any looseness. This gib isinuch less liable to becomey bent or injured than those gibs which arev Wedge-shaped longitudinally,.and with such longitudinally-tapering gib it is difficult. to keep-y a uniform bearing of the gib uponthe respective parts by the end adjustment given. to such gib, Whereas in my improvement the bearing of'the. gibl upon the respective parts is always insured,.because the gib. may move laterally aty any place under the action of either of the screws 24 as such gib is forced into the space to take up any wear or loose.- ness. Gibs of this character may be used on the guides 16 and other part-s of the machine.

I nd it advantageous to be able to act on the adjusting-screw R by power to move the saddle Rin either one direction or theother. Vith this object in View I make a nut R3 in the form of a screw-pinion between two downwardly-projecting lugs upon the underl side of the saddle, and I rotate this nut R3, Fig'. 12, by the worm-pinion 25 and bevel-gears 26 and 27, to the latter of which power is appliedfrom the universal joint O2 of the xtension-shaft O. Hence when the Worm 25 and gears 26 and27 are being rotated and the screw R remains stationary the saddle R will be movedy inA one direction or the other, and it will be apparent that the direction of rotation might beV changed by crossing the belts or leading them straight to drive the shaft O; but usually it is preferable to ernploy another bevel-gear 28, with an intermediate clutch between the gears 27 and 28, acted upon by a handle 29, so that the direction of rotation of the worm R3 maybe changed by the clutch connecting either 27 or 2S with the shaft that is rotated by the universaljoint O2, and I remark that it is preferable to fit the universal joint of the extension-shaft lO with keys, set-screws, or squares to be connected to either of the. shafts that may be rotated by such. extension-shaft O.- Hence this extension-shaft O andits universal joints may be made to rotate the Worm R3 and move the saddle in either one direction or the other, or i-t inay be4 made to rotate the tubular nut Q and raise or lower the knee-plate and parts carried by it, and such extension-shaft may be made also to give motion to the screw T of the platen T. The screw t, Figs. 1 and 7, has on the end a handle t', by which it may be rotated. It alsoy has a changeable gear 41 for giving motion to therevolvin g angle-plate, ,hereinafter described.

by moving t-he. gib laterally it acts as a wedge In order toactuatethe feed-screw t by power,

1I provide a: shaft'with a. coupling 42 at one end` for the universal joint O.2 and at the other end a bevel-pinion 43, gearing'to thewheel 44,

. that. is loose on the screw t, and? there is a sliding clutch 45 or a key on the4 screw t, that can be acted upon by the hand-lever T2,.that passes through a mortise in the side. of the platen and is pivoted to the under side of the top plate of the platen, and I remark that there are not Vopenings in such top plate.v Hence chips and dirt cannot fall into the gearing. The feedi stop-bar 47 is parallel with the screw t and crosses close above the shaft of the pinion 43, and thereis a movable stop 46 on this bar 47 to come into contact with the side. of the swivel-plate S and stop the feed automatically, and there is a forked arm 48 projecting from this stop-bar 47` that engages the clutch 45, and it is preferable to have the lever T2 actnpon. this arm 48, so as to start the feed- `screwt by coupling the parts by hand, a-nd the position in which the stop 46 may be clamped on the bar 47 will determine the place at which the feed will be stopped automatically.

The platen T has a central opening, so that,

if desired, a swivel-pin may be introduced from above to fill the hole and aid in retaining the attachment firmly in position, and vthis swivel-pin s is generally fixed to the attachment, such as a vise or Work-bed, and the pin s is central with the groove in the surface of the platen, and I provide a-revolving angle-plate or vise and a bed for the same, the revolving angle-plate U being circular and its center being approximately in line with the swivel-pin s, and the angle-plateand its bed can be shifted upon the platenT into any desired straight or angular position to the cutting or boring tool driven by the spindle D, and this angle-plate can be eitherhorizontal or tipped, to a greater or less inclination, according to the workv that is carried by the same, and in lcases Where the swivel-pin s only passes from the bed Uf into the. platen `T this platen lT can be movedy endWise upon the swivel-plate or laterally upon the kneeplate to bring the article that is held by the plate U into any desired relation. to the cutting or boring tool.

IOO

IZO

The revolving angle-'plate U is circular and provided with a central tubular axis u., passing down into the cross-piece of the segmental carriers V. These carriers V are half-circles described from a center which corresponds to the surface of the revolving angle-plate U, and the segmental portions ofthe carriers are parallel to each other and are united by a cross-piece r6, through which the axis u passes, and the central portions of the segmental carriers are recessed for the revolving angleplate to set into such recess, so that the surface' of the angle-plate corresponds to the diametric line forming the upper edges of the segmental carriers, and these segmental carriers are received into the quadrant brackets U2 upon the bed U', and there are segmental undercut grooves in the segmental carriers and T-bolts o passing through the quadrant brackets U2 with their heads in such segmental slots, so that by loosening these bolts t the segmental carriers and the angle-plate can be swung to bring the surface of the angleplate horizontal, vertical, or at a greater or less inclination, and when this is done the parts are held firmly by screwing up the bolts o. It is now to be understood that this circular angle-plate U can be revolved upon its axis u, there being a worm-gear u upon such axis across beneath the revolving angle-plate, and

passing through the segmental carriers there is a shaft XV, having upon it a worm-pinion a4, gearing into the worm-Wheel u', so that by rotating this shaft W the circular angle-plate U can be revolved, and in so doing the article that is supported bysuch angle-plate can be rotated, and I remark that in the top surface of the circular angle-plate there are undercut grooves for the reception of bolts by vwhich the article to be acted upon is clamped to this circular angle-plate, and I provide the means next described for revolving this shaft IV automatically or by hand, so that the circular an gle-plate-may be continuously rotated to bring the article into contact with any milling-took'or it can be rotated progressively to present the article held by it to milling or boring tools to act upon such article in boring separate holes or milling progressively any portions of the surfaces. This tool is adapted to. cutting gear-teeth at any desired bevel or inclination or to boring equidistant holes or like operations.

Fastened upon the end of the shaft WV is a crank-arm 30, by which said shaft W can be rotated, and at the outer end of this arm is a sliding pin 3l, the end of which also forms a handle byAW-hich the crank can be rotated, and the pin is adapted to pass into the perforated divided disk VW, such as is 'made use of in gear-cutting machines and similar tools, and the pitch of the worm-pinion L04 in relation to the Worm-gear u is such that the perforated divided disk can be used convenientlyin turning the circular angle-plate and the gear or other article supported Vby the same progresslively to cut any desired number of teeth on a gear or to bore any desired number of holes or to do any similar work. In order to rotate this shaft 7 progressively during the cutting or milling operation performed by the tool in the spindle D, .I have carried the end ofl the shalt lV which is opposite that provided with the crank-arm 30 through the segmental carriers and shaped it to receive the coupling end of the universal joint O2, and also on the other end I provide a gear-wheel 33, permanently fastened to the shaft W ,and the gears 34 and 35 extend to the shaft Sti, that maybe revolved by any suitable power. This shaft 3G is supported by the bed U', and it is advantageous vto employl a journal 37 for the gear-Wheel 84, said journal 37 being supported by the links 39, which links yat their outer ends surround the shafts W and 36 in order that the teeth of the train of .gearing may always remain properly engaged, Whether the circular angle-plate U is horizontal or tipped into amore or less angular position.

I have represented the shaft 336 as rotated by bevel-gears 50 5l, and the bevel-gear 5l is connected with a straight gear 52, which receives motion from the gear 53 on the movable -arm 54, and this receives its motion from the changeable gear il upon the feed-screwt of the platen T, such gearfil receivingits motion from the extension-shaft O, as described. Hence it will be apparent that the circular angle-plate U can be revolved at any desired speed, according to the position of the belts upon the cones or pulleys or according to the size of the-gear 4l, such gear 4l being changeable to give the desired speed of revolution. By this arrangement of gearing the platen can be moved endwise at the same time that the angle-plate is revolved, and the article held on such angle-plate can be milled or otherwise actedupon in a spiralline, either conically or cylindrically. A

If the character of the article that is being acted upon is such that the extension-shaft O and universal joint O2 can reach the shaft XV, such joint O2 can b'e connected directly to the projecting end thereof-that is, at the opposite side of the attachment from the crankarm 30.

I claim as my inventionl. The combination, with the column and standards, of the spindle D, the tool-holding tube within the spindle, a gear-wheel or pulley around the spindle, a key connecting the gear-Wheel spindle and tool-holding tube, the latter being slotted longitudinally for the inner end of the key, a cone of pulleys loose upon the spindle, and means for connecting the cone of pulleys with the gear-Wheel, substantially as set forth.

2. Thecone of pulleys having a separate tubular hub with pinion-teeth at one end thereof, the pulleys being permanently connected to the tubular hub, in combination with the spindle andthe gear-.wheel connected- IOO IIO

ISO

with the spindle, and a movableV connection between the gear-wheel and the cone' of pulleys, substantially as set forth.

3. The spindle and its supporting column and standards, in combination with the cone of pulleys loose upon the spindle and a pinion upon the hub of the pulleys, agear-wheel connected with the spindle, a movable connection between the gear-wheel and the cone of-pulleys, a counter-shaft, and two movable gears thereon adapted to be brought into gear with the pinion or with the gear-wheelV upon the spindle, respectively, or bothbrought into gear, substantially as set forth.

4. The combination, with the tool-holding spindle'and means for revolving the same, of a column or standard having a split tubular socket at the upper end and clamping-screws, a supporting-arm passing through the tubular socket and adapted to be clamped therein, a pendent drop, anda split tubular socket at the end of the supporting-arm for the reception of the upper end of the pendent drop and clamp-screws, substantially as set forth. 5. The combination, with the column, the tool-holding spindle, and means for revolving the same, of a knee-plate, knees or brackets for supporting the same, guide-slides upon the column for the brackets and knee-plate and in which they can be moved vertically, a stationary screw, and a tubular nut capable of being revolved for raising and lowering the brackets, knee-plate, and parts supported by the same, substantially as set forth.

6. 'lhe combination, with the vertical column, the knee-plate, bracket, and guides for supporting the same upon the column, of a screw and nut for raising and lowering the knee-plate and brackets, the saddle resting uponand sustained by' the knee-plate, and a screw and nut for moving the saddle, such screw and nut being in a different plane from the vertical screw to allow the adjustingscrew for the saddle to be at one side ot the screw that rai-ses and lowers the. knee-plate when the knee-plate is lowered, substantially as set forth. l

7. The combination, with the vertical column, the. knee-plate, brackets, and guides,

plate resting upon the saddlea screw for ad.

justing the saddle, bolts for securing the swivel-plate to the saddle, a platen" resting upon and provided with dovetail connections to the swivel-plate, and an adjusting-screw for moving the platen upon the swivel-plate, substantially as set forth.

. 9. The combination,withthe platen having dovetail supports, of a gib thicker at one edge than the other to form a wedge and notched upon its thicker edge, and adjusting-screws acting upon the gib at the notches for moving such gib laterally and preventing looseness in the sliding parts, substantially as set forth.

10.k The combination, with a support and a platen or article sliding within the support, of a gib thicker at one edge than at the other and of a length corresponding to the supporting parts, and screws acting at right angles to the length of the gib to move the same laterally in adjusting the gib to compensate wear, substantially as set forth.

l1. The combination, with a vertical column, a knee-plate, brackets, and supportingguides, of a supporting-arm, a split tube upon the standards of the column, through which the supporting-arm passes, clamps for holdl ing such supporting-arm, a pendent drop at the end of the supporting-arm adapted to receive the boring-bar or other rotating tool, the lower end of the pendent drop being slotted vertically, and a screw upon the kneeplate passing through the slot of the pendent drop for steadying or securing the same, substautially as set forth.

12. The combination, with the column or standards and the spindle and means for rotating the same, of a tool-holding tube within the spindle, atubular nut connected with the i tool-holding tube, a screw for acting upon the tubular nut to move the same endwise, anda gear-wheel drivenby friction for acting upon the tubular screw, whereby the endwise feeding operation upon the tool is arrested when the resistance is sufficient to prevent the screw being rotated by the friction applied to its gear, substantially as set forth.

13. The combination, with the column or standards and the spindle and means for rol tating the same, of a feed-shaft in the same horizontal plane, or nearly so, as the spindle, but at an inclination thereto, a hand-wheel upon the other end of the feed-shaft, fric- ICO tion-washers for connect-ing vthe gear-wheel to the shaft, a. tool-holding tube within the-spindle, a tubular nut connected with the toolholding tube, a tubular screw. for actin-g upon the nut, and a gear-wheel upon the tubular screw gearing to the frictional gear uponY the feed-shaft, substantially as set forth.

14. The combination, wi-th the column or standards and the spindle and means for rotating the same, of a; feed-shaft, a screw acting upon the tool-holder ofthe spindle, gearing for connecting the'feed-shaft and screw, a worm-pinion upon the spindle,aworingear and bevel-gear receiving motion from the worm, bevel gear-wheels loose upon thefeed'- shaft, and a coupling for connecting eitherof the bevel-gears to the feed-shaft, subs-tantially as set forth.

15. The combination, with the column or standards and the spindle supported by the same, of a pulley loose upon the spindle, a

countershaft, gearing for connecting the counter-shaft andpulley, a gear-wheel connected with the spindle, a movable pinion upon the counter-shaft for connecting ordisconnecting such counter-shaft and gear-wheel on the spindle, pulleys and belts driven by the counter-shaft, a feed-shaft, universal joints and extension-shaft, a platen and saddle for supporting the article to be operated upon, a screw for giving motion to the platen, and gearing for connecting the extensionshaft and universal joints with the screw, substantially as set forth.

16. The combination, with a spindle, a column and standards for supporting the same, and means for rotating the spindle and the tool therewith connected, of a knee-plate and 'means for supporting the same upon the column,a screw and nut for raising the kneeplate and the parts supported by the same, a feed-shaft, a counter-shaft, gearing for driving the counter-shaft from the spindle, pulley-belts and pulleys for connecting the counter-shaft and feed-shaft, an extensionshaft and universal joints connected with the feed-shaft, gearing for rotating the screw-nut and raising and lowering the knee-plate, and

a connection between such gearing and the universal joint of the extension-shaft, substantially as set forth.

17. The combination, with the platen, of a circular angle-plate, segmental carriers and connection between them for t-he axis of the circular angle-plate, a bed with quadrant brackets passing inside the segmental carriers, and clamping-screws whereby the circular angle-plate can be sethorizontally or at any desired angle for supporting the article to be operated upon, substantially as set forth.

1.8. The combination, with the circular angle-plate having an axis, of the .segmental carriers recessed for the reception of the circular plate and having a connection between them through which the axis of the angleplate passes, a worm-gear upon the said axis, a shaft and worm for rotating the angle-plate, said shaft passing through the segmental carriers, and a handle or a gear for rotating such shaft, substantially as set forth.

19. The combination, with the circular angle-plate and its axis, of segmental carriers -having a cross-piece between them for the axis of theangle-plate, a gear upon said axis, a cross-shaft and worm for actuating such gear and revolving the angle-plate, abed and quadrant brackets for supporting the segmental carriers, a gear upon theshafhadriving-gear, an intermediate gear, andconnecting-links for retaining the gears in mesh with each other and allowing the angle-plate to be moved into a horizontal or inclined position, substantially as set forth.

20. The combination, with the platen T and its feed-screw, of the stop-bar parallel with the feed-screw, an arm on the stop-bar, bevelgearing to drive the feed-screw, a coupling acted upon by the arm of the stop-bar, and a lever below the top plate of the platen to act upon the stop-bar and coupling, such lever projecting through a rnortise in the side of such platen, substantially as set forth.

2l. The combination, with the column and standard, of a spindle D, the tool-holding tube within the spindle, a driving-wheel around the spindle, and a key connecting the wheelspindle and tool-holding tube, the latter being slotted longitudinally for the inner end vof the key, substantially as set forth.v

22. The cone of pulleys having a tubular hub that is a separate piece from the conical shell and provided with pinion-teeth cut at one end of the tubular hub, the two parts of the cone of pulleys being secured together, substantially as specified.

23. The combination, with the feed-shaft,

,of a column, a knee-plate supported by the column, a screw and gearing for raising and lowering the knee-plate, a saddle with screw and gearing for moving the same, a platen and screw andgearing for. moving the same, and an extension-shaft and universal joints connected with the feed-shaft and adapted to give motion to either the parts that move the platen, the saddle, or the knee-plate, substantially as set forth. i

24. The combination, with the feed-shaft and the supporting-column, of a knee-plate and screw and gearing for raising and lowering the same, a saddle and a platen, the respective screws and gearing for moving the same, and an angle-plate and gearing for revolving the same, and an extension-shaft and universal joints connecting with the feedshaft and adapted to give motion to either the platen, the knee-plate, the saddle, or the angle-plate, substantiallyas set forth.

25. The combination, in a universal milling-machine, o f a column, a feed-shaft, rests for supporting, holding, andJ presenting the work to the drilling or milling tools, and an extension shaft and universal joints connected with the feed-shaft and adapted to be connected with either of -the moving devices for presenting the work to the'boring or milling tools, substantiallyT as set forth.

26. rThe combination, with the saddle -or slide-rest and a screw and handle for moving the saddle, of a worm-pinion connected with the saddle and forming a nut for the screw, anda worm-shaft and means for rotating the IOO IIO'

same and revolving the nut to move the sad- Y. 

